Is there a way to block certain symbols from running in a backtest other than eliminating from dataset. Problem arises in googletrends b/c symbols from FIDO are not the same as for googlefinance and so I would like to block 3 symbols from running in backtest. The symbols have this / in common. BRK/A VIA/B and something else.

I used my Gmail and I typed in my password. With Google I have the two way authentication so I had to generate a application specific password. But I still get the following runtime error:

The index is out of range. It should not be smaller or negative to the listing.Wealth.Lab.Strategies.GoogleTrendsDemo.Execute()WealthLab.WealthScripts.Synchronize(DataSeries source)WealthLab.BarScaleConverter.Synchronize(DataSeries source.Bars bars)System.Collections.Generic.List 1.get_Intem(Int32 index)

I used the Yahoo! Symbol MSFT like in the example and I tried a few other symbols, too. I had the Data Range selected with -All Data-. I think it has something to do with the Google Trends data that these are not synchronized properly?

P.S.: I get the same error with the ActiveTrader 2013-01 Google Trends Strategies.

The code does not work any longer because it appears that recently, Google has made some changes to the Google Trends API and Google authentication. Also, Google Trends has been switched to a different scale, making any downloaded results differ from the previous numbers (e.g. the original Trading System Lab`s numbers).

We will have to fix this, but here come the bad news. With the new website, we lost backward Extension download compatibility, so any Extension updates can only be propagated after the WL 6.5 release. We`re several months from the desired fix to Community Components. Sorry.

We already fixed it in v2013.05 but in October'13, Google's made some changes to their login form, breaking our Google Trends code again. A new fix is required. An update to Community Components library is to follow; ETA = early December. Please stay tuned.

Have you bin able to make the needed changes to trade from Google Trends? The error message I am getting for Google Trends(individual stocks)[rev.A] is "WealthLab GoogleTrendsStrategies2 GetSearchTerm(WealthLab Bars) not all code paths return a value. I also have 2 of the same warnings, The predefined type 'System Tasks Task' is defined in multiple assemblies to the global alias: using definition from c:\Windows.Net\Framework64v

By occasion I've verified earlier today that Google Trends still works. There's a demo strategy in the Wiki that you can play with. Don't forget to read the Notes and enter your Gmail credentials in the code.

Here's mine to prove that it still works. Rename Microsoft.txt to *.csv.

1. Update C.Components to its latest version 2016.05, restart WLP. Does it work now?2. If still no go, disable two-step verification in your Google account and retry with your actual password in the Strategy code. This works for me.

Something has changed in the Google authentication form and it's not evident to me how to pass it now. It's a prerequisite to be able to request the Google Trends data without authentication. (Google wants to know what you're requesting.)

Another way to grab that data even without Google account credentials that I researched is using the JSON objects which power up their web charts. However, the way it's tokenized for security might make it slower and less convenient to use in code (if it's possible at all).

Also I face an error claiming I've sent too many search requests to Google Trends but that's not true. Way too much trouble with the data that should be free and easy to request - it's not worth it to continue fighting with breaking changes.

No solution so far. I've taken down the Google Trends strategies and the Wiki page. This is where it ends.

While both approaches above were tough and not feasible to implement, a way around was found. It's less precise as the data is only Monthly (Google typically returns Weekly data for Google Trends). But it does not require your Gmail account and password any longer! To make it work:

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